Question

what is the maas of
(a) 0.2 mole of oxygen atoms?
(b)0.5 mole of water molecules?​

Answer 1

Explanation:

mass is moles times molecular weight

0.2 *16=3.2

0.5*18=9

Answer 2

Answer:

Therefore, the mass of 0.2 moles of oxygen atom is 3.2 grams and the mass of 0.5 moles of a water molecule is 9.0 grams.